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INFO: rcu detected stall in tcp_write_timer

Status: upstream: reported on 2024/06/21 02:50
Reported-by: syzbot+22fe46255c9b9bcfe460@syzkaller.appspotmail.com
First crash: 153d, last: 35d
▶ ▼ Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in tcp_write_timer (2) bpf 2 1388d 1443d 0/28 auto-closed as invalid on 2021/05/03 11:59
upstream INFO: rcu detected stall in tcp_write_timer (4) net 1 129d 129d 0/28 auto-obsoleted due to no activity on 2024/10/13 08:46
linux-5.15 INFO: rcu detected stall in tcp_write_timer 4 38d 90d 0/3 upstream: reported on 2024/08/22 21:30
upstream INFO: rcu detected stall in tcp_write_timer net 3 1937d 1932d 0/28 auto-closed as invalid on 2019/10/25 14:11
upstream INFO: rcu detected stall in tcp_write_timer (3) net 1 1255d 1255d 0/28 auto-closed as invalid on 2021/09/13 13:17
upstream BUG: soft lockup in tcp_write_timer (4) kasan mm 4 138d 163d 26/28 fixed on 2024/07/09 19:14
linux-4.14 INFO: rcu detected stall in tcp_write_timer 4 1539d 1782d 0/1 auto-closed as invalid on 2021/01/02 05:45
linux-4.19 INFO: rcu detected stall in tcp_write_timer 2 1668d 1722d 0/1 auto-closed as invalid on 2020/08/26 06:46
linux-4.19 BUG: soft lockup in tcp_write_timer (3) 2 691d 704d 0/1 upstream: reported on 2022/12/17 21:41
linux-4.19 BUG: soft lockup in tcp_write_timer (2) 2 1101d 1164d 0/1 auto-closed as invalid on 2022/03/16 10:56
linux-4.19 BUG: soft lockup in tcp_write_timer 1 1330d 1330d 0/1 auto-closed as invalid on 2021/07/30 14:52
upstream BUG: soft lockup in tcp_write_timer (2) kvm 1 940d 940d 0/28 auto-closed as invalid on 2022/06/24 22:31
upstream BUG: soft lockup in tcp_write_timer (3) net 6 317d 425d 0/28 closed as invalid on 2024/03/18 17:07
android-5-15 BUG: soft lockup in tcp_write_timer 11 101d 214d 0/2 auto-obsoleted due to no activity on 2024/11/10 05:27

Sample crash report:
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 9746 jiffies s: 16285 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4542 Comm: syz.1.134 Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kasan_check_range+0x1b0/0x290 mm/kasan/generic.c:189
Code: 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 39 00 0f 85 a2 00 00 00 49 ff c1 48 ff cd 75 ee 5b 41 5e 41 5f <5d> c3 45 84 f6 75 61 41 f7 c6 00 ff 00 00 75 5d 41 f7 c6 00 00 ff
RSP: 0018:ffffc90000006be8 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 0000000000000048 RCX: ffffffff816af0fa
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff911dd228
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff223ba46
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807b980ad8
R13: dffffc0000000000 R14: 0000000000000002 R15: ffff88807b980b80
FS:  00007efc9c5e76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020199000 CR3: 00000000585b7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 mark_lock+0x9a/0x340 kernel/locking/lockdep.c:4606
 mark_usage kernel/locking/lockdep.c:4511 [inline]
 __lock_acquire+0xa28/0x1f80 kernel/locking/lockdep.c:5003
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 seqcount_lockdep_reader_access+0xf8/0x220 include/linux/seqlock.h:102
 ktime_get+0x31/0x270 kernel/time/timekeeping.c:846
 hrtimer_forward_now include/linux/hrtimer.h:508 [inline]
 perf_swevent_hrtimer+0x43b/0x4f0 kernel/events/core.c:10881
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:arch_stack_walk+0x114/0x140 arch/x86/kernel/stacktrace.c:24
Code: ff 48 89 df e8 ed 03 09 00 48 85 c0 74 1e 4c 89 f7 48 89 c6 41 ff d5 84 c0 74 11 48 89 df e8 f3 04 09 00 83 bd 70 ff ff ff 00 <75> d5 65 48 8b 04 25 28 00 00 00 48 3b 45 d0 75 0f 48 83 c4 68 5b
RSP: 0018:ffffc90000007520 EFLAGS: 00000202
RAX: 0000000000000101 RBX: ffffc90000007520 RCX: 0000000000000102
RDX: dffffc0000000000 RSI: ffffc90005ef0000 RDI: 0000000000000001
RBP: ffffc900000075b0 R08: ffffc90005ef7948 R09: ffffc90000007570
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807b980000
R13: ffffffff81786c50 R14: ffffc90000007600 R15: 0000000000000000
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 save_stack+0xf6/0x1e0 mm/page_owner.c:127
 __reset_page_owner+0x52/0x1a0 mm/page_owner.c:148
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1444 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369
 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464
 __skb_frag_unref include/linux/skbuff.h:3436 [inline]
 skb_release_data+0x37f/0x7a0 net/core/skbuff.c:785
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb+0x4c/0x60 net/core/skbuff.c:870
 tcp_write_queue_purge+0x132/0x2f0 net/ipv4/tcp.c:3099
 tcp_done_with_error+0x3d/0xc0 net/ipv4/tcp_input.c:4366
 tcp_write_err net/ipv4/tcp_timer.c:70 [inline]
 tcp_write_timeout net/ipv4/tcp_timer.c:273 [inline]
 tcp_retransmit_timer+0x12ca/0x2800 net/ipv4/tcp_timer.c:547
 tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:676
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6870
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 e9 22 af f6 e8 14 1f e2 f6 fb bf 01 00 00 00 <e8> 79 b4 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 d9 de 32 f7 48
RSP: 0018:ffffc90005ef7a00 EFLAGS: 00000286
RAX: abb7cc3ebacd6d00 RBX: 1ffff92000bdef48 RCX: ffffffff97334103
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001
RBP: ffffc90005ef7ab0 R08: ffffffff90142000 R09: ffffffff90142008
R10: ffffffff90142018 R11: ffffffff90142010 R12: 1ffff92000bdef40
R13: 1ffff92000bdef44 R14: ffffc90005ef7a20 R15: dffffc0000000000
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__slab_free+0x1/0x280 mm/slub.c:3463
Code: c3 0f 1f 84 00 00 00 00 00 48 8b 07 48 83 f8 ff 74 05 48 c1 e8 3a c3 48 c7 c6 09 1d b6 8c e8 16 d0 e8 ff 0f 0b 0f 1f 40 00 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 20 44 89 44 24 04 48 89 4c 24
RSP: 0018:ffffc90005ef7b78 EFLAGS: 00000283
RAX: ffff8880b8e3e4a0 RBX: ffff8880281b5480 RCX: ffff8880281b5480
RDX: ffff8880281b5480 RSI: ffffea0000a06d40 RDI: ffff888017c41640
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff81e23d9b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888017c41640
R13: 0000000000000cc0 R14: ffff888058253300 R15: 0000000000000000
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
 getname_flags+0xb8/0x4f0 fs/namei.c:139
 do_sys_openat2+0xd2/0x4f0 fs/open.c:1312
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efc9b77dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc9c5e7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007efc9b935f80 RCX: 00007efc9b77dff9
RDX: 00000000000026e1 RSI: 0000000000000000 RDI: ffffffffffffff9c
RBP: 00007efc9b7f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efc9b935f80 R15: 00007ffd4f81a178
 </TASK>
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10327 ticks this GP) idle=a0ac/1/0x4000000000000000 softirq=17465/17465 fqs=84
	(t=10501 jiffies g=19905 q=1379 ncpus=2)
rcu: rcu_preempt kthread starved for 357 jiffies! g19905 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:26712 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4581 Comm: syz-executor Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_preemption_disabled+0x48/0x110 lib/smp_processor_id.c:55
Code: 5b 75 65 8b 05 71 ab 5b 75 a9 ff ff ff 7f 74 22 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8 48 83 c4 10 <5b> 41 5c 41 5e 41 5f c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04
RSP: 0018:ffffc900084f7b10 EFLAGS: 00000082
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff8880584ed940
RDX: 0000000000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5d7180
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1d33f2e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000246
R13: ffff8880584ed940 R14: 00000000ffffffff R15: ffffffff8d32b060
FS:  000055557b788500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01f2b26110 CR3: 000000005a406000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
 lock_is_held_type+0xfd/0x180 kernel/locking/lockdep.c:5706
 lock_is_held include/linux/lockdep.h:283 [inline]
 __might_resched+0xa1/0x780 kernel/sched/core.c:9917
 vm_area_alloc_pages mm/vmalloc.c:3016 [inline]
 __vmalloc_area_node mm/vmalloc.c:3061 [inline]
 __vmalloc_node_range+0xb84/0x14b0 mm/vmalloc.c:3233
 vmalloc_user+0x70/0x80 mm/vmalloc.c:3387
 kcov_ioctl+0x55/0x630 kernel/kcov.c:713
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb2ceb7dbfb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffe3f4a0840 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000040000 RCX: 00007fb2ceb7dbfb
RDX: 0000000000040000 RSI: ffffffff80086301 RDI: 00000000000000da
RBP: 00007fb2ced361c8 R08: 00000000000000d9 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
CPU: 0 PID: 4542 Comm: syz.1.134 Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:free_compound_page+0x0/0x1e0 mm/page_alloc.c:775
Code: 3f ff ff ff 89 05 48 89 c4 0c c3 0f 0b 83 3d 46 06 63 15 00 74 dd 0f 0b eb d9 8b 05 32 89 c4 0c f7 d0 a8 c0 0f 95 c0 c3 66 90 <55> 41 57 41 56 53 49 89 ff 49 be 00 00 00 00 00 fc ff df 48 8d 6f
RSP: 0018:ffffc90000007928 EFLAGS: 00000246
RAX: 1ffffffff162dc11 RBX: 0000000000000000 RCX: ffffffff8b16e088
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffea00015c9a00
RBP: ffff888062a61ac2 R08: ffffffff81bdad53 R09: fffff940002b9341
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802523807e
R13: ffff88802523807e R14: ffffea00015c9a00 R15: ffff888062a61af0
FS:  00007efc9c5e76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020199000 CR3: 00000000585b7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __skb_frag_unref include/linux/skbuff.h:3436 [inline]
 skb_release_data+0x37f/0x7a0 net/core/skbuff.c:785
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb+0x4c/0x60 net/core/skbuff.c:870
 tcp_write_queue_purge+0x132/0x2f0 net/ipv4/tcp.c:3099
 tcp_done_with_error+0x3d/0xc0 net/ipv4/tcp_input.c:4366
 tcp_write_err net/ipv4/tcp_timer.c:70 [inline]
 tcp_write_timeout net/ipv4/tcp_timer.c:273 [inline]
 tcp_retransmit_timer+0x12ca/0x2800 net/ipv4/tcp_timer.c:547
 tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:676
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6870
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 e9 22 af f6 e8 14 1f e2 f6 fb bf 01 00 00 00 <e8> 79 b4 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 d9 de 32 f7 48
RSP: 0018:ffffc90005ef7a00 EFLAGS: 00000286
RAX: abb7cc3ebacd6d00 RBX: 1ffff92000bdef48 RCX: ffffffff97334103
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001
RBP: ffffc90005ef7ab0 R08: ffffffff90142000 R09: ffffffff90142008
R10: ffffffff90142018 R11: ffffffff90142010 R12: 1ffff92000bdef40
R13: 1ffff92000bdef44 R14: ffffc90005ef7a20 R15: dffffc0000000000
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__slab_free+0x1/0x280 mm/slub.c:3463
Code: c3 0f 1f 84 00 00 00 00 00 48 8b 07 48 83 f8 ff 74 05 48 c1 e8 3a c3 48 c7 c6 09 1d b6 8c e8 16 d0 e8 ff 0f 0b 0f 1f 40 00 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 20 44 89 44 24 04 48 89 4c 24
RSP: 0018:ffffc90005ef7b78 EFLAGS: 00000283
RAX: ffff8880b8e3e4a0 RBX: ffff8880281b5480 RCX: ffff8880281b5480
RDX: ffff8880281b5480 RSI: ffffea0000a06d40 RDI: ffff888017c41640
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff81e23d9b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888017c41640
R13: 0000000000000cc0 R14: ffff888058253300 R15: 0000000000000000
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
 getname_flags+0xb8/0x4f0 fs/namei.c:139
 do_sys_openat2+0xd2/0x4f0 fs/open.c:1312
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efc9b77dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc9c5e7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007efc9b935f80 RCX: 00007efc9b77dff9
RDX: 00000000000026e1 RSI: 0000000000000000 RDI: ffffffffffffff9c
RBP: 00007efc9b7f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efc9b935f80 R15: 00007ffd4f81a178
 </TASK>

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/16 23:30 linux-6.1.y aa4cd140bba5 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/10/08 11:18 linux-6.1.y aa4cd140bba5 402f1df0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/10/08 08:48 linux-6.1.y aa4cd140bba5 402f1df0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/10/01 18:23 linux-6.1.y aa4cd140bba5 ea2b66a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/09/27 11:40 linux-6.1.y e526b12bf916 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/09/25 03:38 linux-6.1.y e526b12bf916 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/08/28 18:29 linux-6.1.y ee5e09825b81 ef3de9e8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/08/03 17:11 linux-6.1.y 48d525b0e463 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/08/03 14:21 linux-6.1.y 48d525b0e463 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/07/26 10:37 linux-6.1.y c18e82d3ee44 3f86dfed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/07/21 13:41 linux-6.1.y 9b3f9a5b12dc b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
2024/06/21 02:49 linux-6.1.y eb44d83053d6 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: rcu detected stall in tcp_write_timer
* Struck through repros no longer work on HEAD.